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Finding the Fourth Proportional to 218,911.30, 328,111.80 and 100,594.60

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Solution

The fourth proportional to 218,911.30, 328,111.80 and 100,594.60 is: 150,774.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,911.30 : 328,111.80 = 100,594.60 : x
  2. Step 2: Convert to fraction form
    218,911.30/328,111.80 = 100,594.60/x
  3. Step 3: Cross multiply
    218,911.30x = 328,111.80 × 100,594.60
  4. Step 4: Simplify right side
    218,911.30x = 33,006,275,276.28
  5. Step 5: Solve for x
    x = 33,006,275,276.28/218,911.30
  6. Step 6: Final answer
    x = 150,774.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.